"The women in our family just tend to have children young, it runs in the genes," Jackson told Hello. "I grew up quite quickly and wouldn't have considered having a child if I was doing what my friends are doing at this stage, messing around. I don't drink, I don't smoke and I'm very settled."

"He said, 'Well done,' and I said, 'I didn't have to try too hard,'" Jackson said. "I imagine it's nice to be a great-grandad — although I'm not sure he likes the idea of getting old, or being called one. I call him Mick — I wouldn't start calling him grandpa."